Home / 3,318.49-4,578.81-1,974.56

Finding the Fourth Proportional to 3,318.49, 4,578.81 and 1,974.56

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Solution

The fourth proportional to 3,318.49, 4,578.81 and 1,974.56 is: 2,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.49 : 4,578.81 = 1,974.56 : x
  2. Step 2: Convert to fraction form
    3,318.49/4,578.81 = 1,974.56/x
  3. Step 3: Cross multiply
    3,318.49x = 4,578.81 × 1,974.56
  4. Step 4: Simplify right side
    3,318.49x = 9,041,135.07
  5. Step 5: Solve for x
    x = 9,041,135.07/3,318.49
  6. Step 6: Final answer
    x = 2,724.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.